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Respiratory System
nothing
5
Anatomy
9th Grade
03/05/2008
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Term
Function
 Definition
• air distribution
• gas exchange
• filters, warms, and humidifies the air we breathe
Term
Organs of respiratory
 Definition
• upper respiratory tract:
o nose
o pharynx
o larynx
• lower respiratory tract:
o trachea
o bronchi
o lungs
Term
Respiratory mucosa
 Definition
• Membrane that lines the most of the respiratory tract
• Covered with mucus – helps purify air going into the lungs
o 125 mL of mucus per day produced in respiratory system
o cilia helps move the mucus up the respiratory tract (smoking paralyzes cilia → smokers have to cough to get mucus up)
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